INFO: task kworker/1:3:21407 blocked for more than 143 seconds.
Not tainted 6.4.0-syzkaller-10062-gf8566aa4f176 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:3 state:D stack:20776 pid:21407 ppid:2 flags:0x00004000
Workqueue: ipv6_addrconf addrconf_dad_work
Call Trace:
context_switch kernel/sched/core.c:5381 [inline]
__schedule+0x1873/0x48f0 kernel/sched/core.c:6710
schedule+0xc3/0x180 kernel/sched/core.c:6786
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6845
__mutex_lock_common+0xe33/0x2530 kernel/locking/mutex.c:679
__mutex_lock kernel/locking/mutex.c:747 [inline]
mutex_lock_nested+0x1b/0x20 kernel/locking/mutex.c:799
addrconf_dad_work+0xd0/0x16b0 net/ipv6/addrconf.c:4088
process_one_work+0x92c/0x12c0 kernel/workqueue.c:2597
worker_thread+0xa63/0x1210 kernel/workqueue.c:2748
kthread+0x2b8/0x350 kernel/kthread.c:389
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
INFO: task kworker/u4:2:24460 blocked for more than 144 seconds.
Not tainted 6.4.0-syzkaller-10062-gf8566aa4f176 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u4:2 state:D stack:24120 pid:24460 ppid:2 flags:0x00004000
Workqueue: netns cleanup_net
Call Trace:
context_switch kernel/sched/core.c:5381 [inline]
__schedule+0x1873/0x48f0 kernel/sched/core.c:6710
schedule+0xc3/0x180 kernel/sched/core.c:6786
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6845
__mutex_lock_common+0xe33/0x2530 kernel/locking/mutex.c:679
__mutex_lock kernel/locking/mutex.c:747 [inline]
mutex_lock_nested+0x1b/0x20 kernel/locking/mutex.c:799
ip_tunnel_delete_nets+0xcd/0x340 net/ipv4/ip_tunnel.c:1139
ops_exit_list net/core/net_namespace.c:175 [inline]
cleanup_net+0x767/0xb80 net/core/net_namespace.c:614
process_one_work+0x92c/0x12c0 kernel/workqueue.c:2597
worker_thread+0xa63/0x1210 kernel/workqueue.c:2748
kthread+0x2b8/0x350 kernel/kthread.c:389
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
INFO: task kworker/0:7:30328 blocked for more than 144 seconds.
Not tainted 6.4.0-syzkaller-10062-gf8566aa4f176 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:7 state:D stack:26328 pid:30328 ppid:2 flags:0x00004000
Workqueue: ipv6_addrconf addrconf_verify_work
Call Trace:
context_switch kernel/sched/core.c:5381 [inline]
__schedule+0x1873/0x48f0 kernel/sched/core.c:6710
schedule+0xc3/0x180 kernel/sched/core.c:6786
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6845
__mutex_lock_common+0xe33/0x2530 kernel/locking/mutex.c:679
__mutex_lock kernel/locking/mutex.c:747 [inline]
mutex_lock_nested+0x1b/0x20 kernel/locking/mutex.c:799
addrconf_verify_work+0x19/0x30 net/ipv6/addrconf.c:4630
process_one_work+0x92c/0x12c0 kernel/workqueue.c:2597
worker_thread+0xa63/0x1210 kernel/workqueue.c:2748
kthread+0x2b8/0x350 kernel/kthread.c:389
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
INFO: task syz-executor.4:313 blocked for more than 144 seconds.
Not tainted 6.4.0-syzkaller-10062-gf8566aa4f176 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4 state:D stack:20712 pid:313 ppid:1 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5381 [inline]
__schedule+0x1873/0x48f0 kernel/sched/core.c:6710
schedule+0xc3/0x180 kernel/sched/core.c:6786
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6845
__mutex_lock_common+0xe33/0x2530 kernel/locking/mutex.c:679
__mutex_lock kernel/locking/mutex.c:747 [inline]
mutex_lock_nested+0x1b/0x20 kernel/locking/mutex.c:799
wiphy_lock include/net/cfg80211.h:5773 [inline]
reg_process_self_managed_hints+0x8c/0x140 net/wireless/reg.c:3181
wiphy_register+0x2005/0x2ce0 net/wireless/core.c:983
ieee80211_register_hw+0x2bca/0x38b0 net/mac80211/main.c:1392
mac80211_hwsim_new_radio+0x2423/0x40d0 drivers/net/wireless/virtual/mac80211_hwsim.c:5303
hwsim_new_radio_nl+0xe50/0x21c0 drivers/net/wireless/virtual/mac80211_hwsim.c:5983
genl_family_rcv_msg_doit net/netlink/genetlink.c:970 [inline]
genl_family_rcv_msg net/netlink/genetlink.c:1050 [inline]
genl_rcv_msg+0xc85/0xf20 net/netlink/genetlink.c:1067
netlink_rcv_skb+0x1df/0x430 net/netlink/af_netlink.c:2549
genl_rcv+0x28/0x40 net/netlink/genetlink.c:1078
netlink_unicast_kernel net/netlink/af_netlink.c:1339 [inline]
netlink_unicast+0x7c3/0x990 net/netlink/af_netlink.c:1365
netlink_sendmsg+0xa2a/0xd60 net/netlink/af_netlink.c:1914
sock_sendmsg_nosec net/socket.c:725 [inline]
sock_sendmsg net/socket.c:748 [inline]
__sys_sendto+0x484/0x640 net/socket.c:2134
__do_sys_sendto net/socket.c:2146 [inline]
__se_sys_sendto net/socket.c:2142 [inline]
__x64_sys_sendto+0xde/0xf0 net/socket.c:2142
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f6d7f63e2ac
RSP: 002b:00007fff0757d3a0 EFLAGS: 00000293 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007f6d802d4620 RCX: 00007f6d7f63e2ac
RDX: 0000000000000024 RSI: 00007f6d802d4670 RDI: 0000000000000003
RBP: 0000000000000000 R08: 00007fff0757d3f4 R09: 000000000000000c
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000
R13: 00007f6d802d4670 R14: 0000000000000003 R15: 0000000000000000
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/13:
#0: ffffffff8d326af0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xd20 kernel/rcu/tasks.h:522
1 lock held by rcu_tasks_trace/14:
#0: ffffffff8d326eb0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xd20 kernel/rcu/tasks.h:522
1 lock held by khungtaskd/28:
#0: ffffffff8d326920 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
2 locks held by getty/4742:
#0: ffff88802cd70098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc900015a02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b1/0x1db0 drivers/tty/n_tty.c:2176
2 locks held by kworker/0:8/1346:
2 locks held by kworker/0:4/21307:
3 locks held by kworker/1:3/21407:
#0: ffff88814aaf6d38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x7e3/0x12c0 kernel/workqueue.c:2569
#1: ffffc90019ae7d20 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work+0x82b/0x12c0 kernel/workqueue.c:2571
#2: ffffffff8e4b16c8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xd0/0x16b0 net/ipv6/addrconf.c:4088
4 locks held by kworker/u4:2/24460:
#0: ffff888014663138 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x7e3/0x12c0 kernel/workqueue.c:2569
#1: ffffc900090efd20 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x82b/0x12c0 kernel/workqueue.c:2571
#2: ffffffff8e4a5390 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0xf5/0xb80 net/core/net_namespace.c:576
#3: ffffffff8e4b16c8 (rtnl_mutex){+.+.}-{3:3}, at: ip_tunnel_delete_nets+0xcd/0x340 net/ipv4/ip_tunnel.c:1139
4 locks held by kworker/0:14/24835:
4 locks held by kworker/0:16/24936:
4 locks held by kworker/0:0/29887:
4 locks held by kworker/0:1/30043:
3 locks held by kworker/0:7/30328:
#0: ffff88814aaf6d38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x7e3/0x12c0 kernel/workqueue.c:2569
#1: ffffc90005007d20 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work+0x82b/0x12c0 kernel/workqueue.c:2571
#2: ffffffff8e4b16c8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_verify_work+0x19/0x30 net/ipv6/addrconf.c:4630
4 locks held by syz-executor.4/313:
#0: ffffffff8e513650 (cb_lock){++++}-{3:3}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1077
#1: ffffffff8e513508 (genl_mutex){+.+.}-{3:3}, at: genl_lock net/netlink/genetlink.c:33 [inline]
#1: ffffffff8e513508 (genl_mutex){+.+.}-{3:3}, at: genl_rcv_msg+0x126/0xf20 net/netlink/genetlink.c:1065
#2: ffffffff8e4b16c8 (rtnl_mutex){+.+.}-{3:3}, at: wiphy_register+0x1e38/0x2ce0 net/wireless/core.c:962
#3: ffff888085478768 (&rdev->wiphy.mtx){+.+.}-{3:3}, at: wiphy_lock include/net/cfg80211.h:5773 [inline]
#3: ffff888085478768 (&rdev->wiphy.mtx){+.+.}-{3:3}, at: reg_process_self_managed_hints+0x8c/0x140 net/wireless/reg.c:3181
1 lock held by syz-executor.4/337:
#0: ffffffff8e4b16c8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:78 [inline]
#0: ffffffff8e4b16c8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x7d4/0xf50 net/core/rtnetlink.c:6421
1 lock held by syz-executor.4/349:
#0: ffffffff8e4b16c8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:78 [inline]
#0: ffffffff8e4b16c8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x7d4/0xf50 net/core/rtnetlink.c:6421
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.4.0-syzkaller-10062-gf8566aa4f176 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106
nmi_cpu_backtrace+0x498/0x4d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x187/0x300 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
watchdog+0xec2/0xf00 kernel/hung_task.c:379
kthread+0x2b8/0x350 kernel/kthread.c:389
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 1346 Comm: kworker/0:8 Not tainted 6.4.0-syzkaller-10062-gf8566aa4f176 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023
Workqueue: events_power_efficient neigh_periodic_work
RIP: 0010:unwind_next_frame+0x186d/0x2390 arch/x86/kernel/unwind_orc.c:648
Code: b6 04 18 84 c0 0f 85 14 0a 00 00 49 0f bf 07 48 01 c5 48 8b 7c 24 08 48 89 ee 4c 89 f2 eb 41 4c 8d 71 02 48 83 c1 03 4c 89 f0 <48> c1 e8 03 0f b6 04 18 84 c0 0f 85 02 0a 00 00 48 89 c8 48 c1 e8
RSP: 0018:ffffc90000006870 EFLAGS: 00000282
RAX: ffffffff8f13d9d2 RBX: dffffc0000000000 RCX: ffffffff8f13d9d3
RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffffc90000006a00
RBP: ffffffff8f13d9d4 R08: ffffc900000069ff R09: 0000000000000000
R10: ffffc900000069f0 R11: fffff52000000d40 R12: 1ffffffff1e27b3a
R13: 1ffff92000000d35 R14: ffffffff8f13d9d2 R15: ffffc900000069a0
FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055cad24ef040 CR3: 000000000d130000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__unwind_start+0x5a1/0x720 arch/x86/kernel/unwind_orc.c:760
unwind_start arch/x86/include/asm/unwind.h:64 [inline]
arch_stack_walk+0xdf/0x140 arch/x86/kernel/stacktrace.c:24
stack_trace_save+0x117/0x1c0 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:45 [inline]
kasan_set_track+0x4f/0x70 mm/kasan/common.c:52
__kasan_slab_alloc+0x66/0x70 mm/kasan/common.c:328
kasan_slab_alloc include/linux/kasan.h:186 [inline]
slab_post_alloc_hook+0x68/0x3a0 mm/slab.h:750
slab_alloc_node mm/slub.c:3470 [inline]
slab_alloc mm/slub.c:3478 [inline]
__kmem_cache_alloc_lru mm/slub.c:3485 [inline]
kmem_cache_alloc+0x123/0x300 mm/slub.c:3494
skb_ext_maybe_cow net/core/skbuff.c:6560 [inline]
skb_ext_add+0x1d6/0x910 net/core/skbuff.c:6626
nf_bridge_unshare net/bridge/br_netfilter_hooks.c:160 [inline]
br_nf_forward_ip+0xc9/0xf90 net/bridge/br_netfilter_hooks.c:592
nf_hook_entry_hookfn include/linux/netfilter.h:143 [inline]
nf_hook_slow+0xb2/0x1f0 net/netfilter/core.c:626
nf_hook include/linux/netfilter.h:258 [inline]
NF_HOOK+0x280/0x420 include/linux/netfilter.h:301
__br_forward+0x482/0x640 net/bridge/br_forward.c:115
deliver_clone net/bridge/br_forward.c:131 [inline]
maybe_deliver+0xb3/0x160 net/bridge/br_forward.c:189
br_flood+0x2e4/0x660 net/bridge/br_forward.c:235
br_handle_frame_finish+0x1930/0x2010 net/bridge/br_input.c:210
br_nf_hook_thresh+0x46e/0x580 net/bridge/br_netfilter_hooks.c:1048
br_nf_pre_routing_finish_ipv6+0x9cf/0xcb0
NF_HOOK include/linux/netfilter.h:303 [inline]
br_nf_pre_routing_ipv6+0x361/0x720 net/bridge/br_netfilter_ipv6.c:178
nf_hook_entry_hookfn include/linux/netfilter.h:143 [inline]
nf_hook_bridge_pre net/bridge/br_input.c:272 [inline]
br_handle_frame+0x9e6/0x1490 net/bridge/br_input.c:417
__netif_receive_skb_core+0x13a0/0x40e0 net/core/dev.c:5346
__netif_receive_skb_one_core net/core/dev.c:5450 [inline]
__netif_receive_skb+0x120/0x530 net/core/dev.c:5566
process_backlog+0x34b/0x710 net/core/dev.c:5894
__napi_poll+0xc7/0x470 net/core/dev.c:6460
napi_poll net/core/dev.c:6527 [inline]
net_rx_action+0x78b/0x1010 net/core/dev.c:6660
__do_softirq+0x2ab/0x908 kernel/softirq.c:553
do_softirq+0x11b/0x1e0 kernel/softirq.c:454
__local_bh_enable_ip+0x1b5/0x1f0 kernel/softirq.c:381
neigh_periodic_work+0xa99/0xcb0 net/core/neighbour.c:1006
process_one_work+0x92c/0x12c0 kernel/workqueue.c:2597
worker_thread+0xa63/0x1210 kernel/workqueue.c:2748
kthread+0x2b8/0x350 kernel/kthread.c:389
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308